mongoose鏈接報錯
node/node_modules/mongoose/node_modules/mongodb/lib/server.js:242
? ? ? ? process.nextTick(function() { throw err; })
? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ^
Error: getaddrinfo ENOTFOUND localhost localhost:27017
? ? at errnoException (dns.js:26:10)
? ? at GetAddrInfoReqWrap.onlookup [as oncomplete] (dns.js:77:26)
進行到在app.js里 添加mongoose.connect()之后，啟動命令行報錯，求解
